================
@@ -20,6 +20,958 @@ using namespace clang;
using namespace CodeGen;
using namespace llvm;
+// The 0th bit simulates the `vta` of RVV
+// The 1st bit simulates the `vma` of RVV
+static constexpr unsigned RVV_VTA = 0x1;
+static constexpr unsigned RVV_VMA = 0x2;
+
+// RISC-V Vector builtin helper functions are marked NOINLINE to prevent
+// excessive inlining in CodeGenFunction::EmitRISCVBuiltinExpr's large switch
+// statement, which would significantly increase compilation time.
+static LLVM_ATTRIBUTE_NOINLINE Value *
+emitRVVVLEFFBuiltin(CodeGenFunction *CGF, const CallExpr *E,
+ ReturnValueSlot ReturnValue, llvm::Type *ResultType,
+ Intrinsic::ID ID, SmallVector<Value *, 4> Ops,
+ int PolicyAttrs, bool IsMasked, unsigned SegInstSEW) {
+ auto &Builder = CGF->Builder;
+ auto &CGM = CGF->CGM;
+ llvm::SmallVector<llvm::Type *, 2> IntrinsicTypes;
+ if (IsMasked) {
+ // Move mask to right before vl.
+ std::rotate(Ops.begin(), Ops.begin() + 1, Ops.end() - 1);
+ if ((PolicyAttrs & RVV_VTA) && (PolicyAttrs & RVV_VMA))
+ Ops.insert(Ops.begin(), llvm::PoisonValue::get(ResultType));
+ Ops.push_back(ConstantInt::get(Ops.back()->getType(), PolicyAttrs));
+ IntrinsicTypes = {ResultType, Ops[4]->getType(), Ops[2]->getType()};
+ } else {
+ if (PolicyAttrs & RVV_VTA)
+ Ops.insert(Ops.begin(), llvm::PoisonValue::get(ResultType));
+ IntrinsicTypes = {ResultType, Ops[3]->getType(), Ops[1]->getType()};
+ }
+ Value *NewVL = Ops[2];
+ Ops.erase(Ops.begin() + 2);
+ llvm::Function *F = CGM.getIntrinsic(ID, IntrinsicTypes);
+ llvm::Value *LoadValue = Builder.CreateCall(F, Ops, "");
+ llvm::Value *V = Builder.CreateExtractValue(LoadValue, {0});
+ // Store new_vl.
+ clang::CharUnits Align;
+ if (IsMasked)
+ Align = CGM.getNaturalPointeeTypeAlignment(
+ E->getArg(E->getNumArgs() - 2)->getType());
+ else
+ Align = CGM.getNaturalPointeeTypeAlignment(E->getArg(1)->getType());
+ llvm::Value *Val = Builder.CreateExtractValue(LoadValue, {1});
+ Builder.CreateStore(Val, Address(NewVL, Val->getType(), Align));
+ return V;
+}
+
+static LLVM_ATTRIBUTE_NOINLINE Value *
+emitRVVVSSEBuiltin(CodeGenFunction *CGF, const CallExpr *E,
+ ReturnValueSlot ReturnValue, llvm::Type *ResultType,
+ Intrinsic::ID ID, SmallVector<Value *, 4> Ops,
+ int PolicyAttrs, bool IsMasked, unsigned SegInstSEW) {
+ auto &Builder = CGF->Builder;
+ auto &CGM = CGF->CGM;
+ llvm::SmallVector<llvm::Type *, 2> IntrinsicTypes;
----------------
topperc wrote:
2 -> 3
https://github.com/llvm/llvm-project/pull/154906
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